Results
The turnout for the Selby and Ainsty constituency is 74.07%. The 2015 turnout was 69.8%.
| Candidate | Party | Number of votes |
| Nigel ADAMS | The Conservative Party | 32,921 (Elected) |
| David BOWGETT | Labour Party | 19,149 |
| Callum DELHOY | Liberal Democrats | 2,293 |
| Tony PYCROFT | UKIP | 1,713 |
Rejected Ballot Papers:
| Reason | Number of votes |
| Want of an official mark | 0 |
| Voting for more Candidates than voter was entitled to | 29 |
| Writing or mark by which voter could be identified | 3 |
| Being unmarked or wholly void for uncertainty | 113 |
| Rejected in part | 0 |
| Total | 145 |